mirror of
https://github.com/mpv-player/mpv
synced 2024-12-15 19:35:49 +00:00
bf0b713d0c
Modifies header parsing to do a brute-force scan for known guids, to avoid having to analyze and parse the whole property-tree structure. git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@14237 b3059339-0415-0410-9bf9-f77b7e298cf2
437 lines
16 KiB
C
437 lines
16 KiB
C
// .asf fileformat docs from http://divx.euro.ru
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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extern int verbose; // defined in mplayer.c
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#include "config.h"
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#include "mp_msg.h"
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#include "stream.h"
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#include "demuxer.h"
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#include "stheader.h"
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#include "asf.h"
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#ifdef ARCH_X86
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#define ASF_LOAD_GUID_PREFIX(guid) (*(uint32_t *)(guid))
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#else
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#define ASF_LOAD_GUID_PREFIX(guid) \
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((guid)[3] << 24 | (guid)[2] << 16 | (guid)[1] << 8 | (guid)[0])
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#endif
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#define ASF_GUID_PREFIX_audio_stream 0xF8699E40
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#define ASF_GUID_PREFIX_video_stream 0xBC19EFC0
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#define ASF_GUID_PREFIX_audio_conceal_none 0x49f1a440
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#define ASF_GUID_PREFIX_audio_conceal_interleave 0xbfc3cd50
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#define ASF_GUID_PREFIX_header 0x75B22630
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#define ASF_GUID_PREFIX_data_chunk 0x75b22636
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#define ASF_GUID_PREFIX_index_chunk 0x33000890
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#define ASF_GUID_PREFIX_stream_header 0xB7DC0791
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#define ASF_GUID_PREFIX_header_2_0 0xD6E229D1
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#define ASF_GUID_PREFIX_file_header 0x8CABDCA1
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#define ASF_GUID_PREFIX_content_desc 0x75b22633
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#define ASF_GUID_PREFIX_stream_group 0x7bf875ce
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/*
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const char asf_audio_stream_guid[16] = {0x40, 0x9e, 0x69, 0xf8,
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0x4d, 0x5b, 0xcf, 0x11, 0xa8, 0xfd, 0x00, 0x80, 0x5f, 0x5c, 0x44, 0x2b};
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const char asf_video_stream_guid[16] = {0xc0, 0xef, 0x19, 0xbc,
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0x4d, 0x5b, 0xcf, 0x11, 0xa8, 0xfd, 0x00, 0x80, 0x5f, 0x5c, 0x44, 0x2b};
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*/
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const char asf_stream_header_guid[16] = {0x91, 0x07, 0xdc, 0xb7,
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0xb7, 0xa9, 0xcf, 0x11, 0x8e, 0xe6, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65};
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const char asf_file_header_guid[16] = {0xa1, 0xdc, 0xab, 0x8c,
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0x47, 0xa9, 0xcf, 0x11, 0x8e, 0xe4, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65};
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const char asf_content_desc_guid[16] = {0x33, 0x26, 0xb2, 0x75,
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0x8e, 0x66, 0xcf, 0x11, 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c};
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const char asf_stream_group_guid[16] = {0xce, 0x75, 0xf8, 0x7b,
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0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2};
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const char asf_data_chunk_guid[16] = {0x36, 0x26, 0xb2, 0x75,
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0x8e, 0x66, 0xcf, 0x11, 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c};
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static ASF_header_t asfh;
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unsigned char* asf_packet=NULL;
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int asf_scrambling_h=1;
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int asf_scrambling_w=1;
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int asf_scrambling_b=1;
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int asf_packetsize=0;
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double asf_packetrate=0;
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int asf_movielength=0;
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//int i;
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// the variable string is modify in this function
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void pack_asf_string(char* string, int length) {
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int i,j;
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if( string==NULL ) return;
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for( i=0, j=0; i<length && string[i]!='\0'; i+=2, j++) {
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string[j]=string[i];
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}
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string[j]='\0';
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}
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// the variable string is modify in this function
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void print_asf_string(const char* name, char* string, int length) {
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pack_asf_string(string, length);
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mp_msg(MSGT_HEADER,MSGL_V,"%s%s\n", name, string);
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}
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static char* asf_chunk_type(unsigned char* guid) {
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static char tmp[60];
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char *p;
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int i;
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switch(ASF_LOAD_GUID_PREFIX(guid)){
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case ASF_GUID_PREFIX_audio_stream:
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return "guid_audio_stream";
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case ASF_GUID_PREFIX_video_stream:
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return "guid_video_stream";
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case ASF_GUID_PREFIX_audio_conceal_none:
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return "guid_audio_conceal_none";
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case ASF_GUID_PREFIX_audio_conceal_interleave:
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return "guid_audio_conceal_interleave";
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case ASF_GUID_PREFIX_header:
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return "guid_header";
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case ASF_GUID_PREFIX_data_chunk:
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return "guid_data_chunk";
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case ASF_GUID_PREFIX_index_chunk:
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return "guid_index_chunk";
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case ASF_GUID_PREFIX_stream_header:
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return "guid_stream_header";
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case ASF_GUID_PREFIX_header_2_0:
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return "guid_header_2_0";
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case ASF_GUID_PREFIX_file_header:
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return "guid_file_header";
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case ASF_GUID_PREFIX_content_desc:
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return "guid_content_desc";
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default:
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strcpy(tmp, "unknown guid ");
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p = tmp + strlen(tmp);
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for (i = 0; i < 16; i++) {
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if ((1 << i) & ((1<<4) | (1<<6) | (1<<8))) *p++ = '-';
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sprintf(p, "%02x", guid[i]);
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p += 2;
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}
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return tmp;
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}
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}
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int asf_check_header(demuxer_t *demuxer){
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unsigned char asfhdrguid[16]={0x30,0x26,0xB2,0x75,0x8E,0x66,0xCF,0x11,0xA6,0xD9,0x00,0xAA,0x00,0x62,0xCE,0x6C};
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stream_read(demuxer->stream,(char*) &asfh,sizeof(asfh)); // header obj
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le2me_ASF_header_t(&asfh); // swap to machine endian
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// for(i=0;i<16;i++) printf(" %02X",temp[i]);printf("\n");
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// for(i=0;i<16;i++) printf(" %02X",asfhdrguid[i]);printf("\n");
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if(memcmp(asfhdrguid,asfh.objh.guid,16)){
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mp_msg(MSGT_HEADER,MSGL_V,"ASF_check: not ASF guid!\n");
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return 0; // not ASF guid
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}
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if(asfh.cno>256){
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mp_msg(MSGT_HEADER,MSGL_V,"ASF_check: invalid subchunks_no %d\n",(int) asfh.cno);
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return 0; // invalid header???
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}
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return 1;
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}
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extern void print_wave_header(WAVEFORMATEX *h);
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extern void print_video_header(BITMAPINFOHEADER *h);
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int find_asf_guid(char *buf, const char *guid, int cur_pos, int buf_len)
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{
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int i;
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for (i = cur_pos; i < buf_len - 19; i++) {
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if (memcmp(&buf[i], guid, 16) == 0)
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return i + 16 + 8; // point after guid + length
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}
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return -1;
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}
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int read_asf_header(demuxer_t *demuxer){
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unsigned int hdr_len = asfh.objh.size - sizeof(asfh);
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char *hdr = NULL;
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char guid_buffer[16];
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int pos, start = stream_tell(demuxer->stream);
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uint32_t* streams = NULL;
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int audio_streams=0;
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int video_streams=0;
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uint16_t stream_count=0;
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int best_video = -1;
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int best_audio = -1;
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uint64_t data_len;
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if (hdr_len > 64 * 1024) {
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mp_msg(MSGT_HEADER, MSGL_FATAL,
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"FATAL: header size bigger than 64 kB (%d)!\n"
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"Please contact MPlayer authors, and upload/send this file.\n",
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hdr_len);
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return 0;
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}
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hdr = malloc(hdr_len);
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if (!hdr) {
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mp_msg(MSGT_HEADER, MSGL_FATAL, "Could not allocate %d bytes for header\n",
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hdr_len);
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return 0;
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}
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stream_read(demuxer->stream, hdr, hdr_len);
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if (stream_eof(demuxer->stream)) {
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mp_msg(MSGT_HEADER, MSGL_FATAL,
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"EOF while reading asf header, broken/incomplete file?\n");
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goto err_out;
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}
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// find stream headers
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pos = 0;
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while ((pos = find_asf_guid(hdr, asf_stream_header_guid, pos, hdr_len)) >= 0)
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{
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ASF_stream_header_t *streamh = (ASF_stream_header_t *)&hdr[pos];
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char *buffer;
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pos += sizeof(ASF_stream_header_t);
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if (pos > hdr_len) goto len_err_out;
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le2me_ASF_stream_header_t(streamh);
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mp_msg(MSGT_HEADER, MSGL_V, "stream type: %s\n",
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asf_chunk_type(streamh->type));
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mp_msg(MSGT_HEADER, MSGL_V, "stream concealment: %s\n",
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asf_chunk_type(streamh->concealment));
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mp_msg(MSGT_HEADER, MSGL_V, "type: %d bytes, stream: %d bytes ID: %d\n",
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(int)streamh->type_size, (int)streamh->stream_size,
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(int)streamh->stream_no);
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mp_msg(MSGT_HEADER, MSGL_V, "unk1: %lX unk2: %X\n",
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(unsigned long)streamh->unk1, (unsigned int)streamh->unk2);
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mp_msg(MSGT_HEADER, MSGL_V, "FILEPOS=0x%X\n", pos + start);
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// type-specific data:
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buffer = &hdr[pos];
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pos += streamh->type_size;
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if (pos > hdr_len) goto len_err_out;
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switch(ASF_LOAD_GUID_PREFIX(streamh->type)){
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case ASF_GUID_PREFIX_audio_stream: {
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sh_audio_t* sh_audio=new_sh_audio(demuxer,streamh->stream_no & 0x7F);
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++audio_streams;
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sh_audio->wf=calloc((streamh->type_size<sizeof(WAVEFORMATEX))?sizeof(WAVEFORMATEX):streamh->type_size,1);
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memcpy(sh_audio->wf,buffer,streamh->type_size);
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le2me_WAVEFORMATEX(sh_audio->wf);
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if(verbose>=1) print_wave_header(sh_audio->wf);
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if(ASF_LOAD_GUID_PREFIX(streamh->concealment)==ASF_GUID_PREFIX_audio_conceal_interleave){
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buffer = &hdr[pos];
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pos += streamh->stream_size;
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if (pos > hdr_len) goto len_err_out;
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asf_scrambling_h=buffer[0];
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asf_scrambling_w=(buffer[2]<<8)|buffer[1];
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asf_scrambling_b=(buffer[4]<<8)|buffer[3];
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asf_scrambling_w/=asf_scrambling_b;
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} else {
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asf_scrambling_b=asf_scrambling_h=asf_scrambling_w=1;
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}
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mp_msg(MSGT_HEADER,MSGL_V,"ASF: audio scrambling: %d x %d x %d\n",asf_scrambling_h,asf_scrambling_w,asf_scrambling_b);
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//if(demuxer->audio->id==-1) demuxer->audio->id=streamh.stream_no & 0x7F;
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break;
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}
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case ASF_GUID_PREFIX_video_stream: {
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sh_video_t* sh_video=new_sh_video(demuxer,streamh->stream_no & 0x7F);
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unsigned int len=streamh->type_size-(4+4+1+2);
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++video_streams;
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// sh_video->bih=malloc(chunksize); memset(sh_video->bih,0,chunksize);
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sh_video->bih=calloc((len<sizeof(BITMAPINFOHEADER))?sizeof(BITMAPINFOHEADER):len,1);
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memcpy(sh_video->bih,&buffer[4+4+1+2],len);
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le2me_BITMAPINFOHEADER(sh_video->bih);
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//sh_video->fps=(float)sh_video->video.dwRate/(float)sh_video->video.dwScale;
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//sh_video->frametime=(float)sh_video->video.dwScale/(float)sh_video->video.dwRate;
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if(verbose>=1) print_video_header(sh_video->bih);
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//asf_video_id=streamh.stream_no & 0x7F;
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//if(demuxer->video->id==-1) demuxer->video->id=streamh.stream_no & 0x7F;
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break;
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}
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}
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// stream-specific data:
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// stream_read(demuxer->stream,(char*) buffer,streamh.stream_size);
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}
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// find file header
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pos = find_asf_guid(hdr, asf_file_header_guid, 0, hdr_len);
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if (pos >= 0) {
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ASF_file_header_t *fileh = (ASF_file_header_t *)&hdr[pos];
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pos += sizeof(ASF_file_header_t);
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if (pos > hdr_len) goto len_err_out;
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le2me_ASF_file_header_t(fileh);
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mp_msg(MSGT_HEADER, MSGL_V, "ASF: packets: %d flags: %d "
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"max_packet_size: %d min_packet_size: %d max_bitrate: %d "
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"preroll: %d\n",
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(int)fileh->num_packets, (int)fileh->flags,
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(int)fileh->min_packet_size, (int)fileh->max_packet_size,
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(int)fileh->max_bitrate, (int)fileh->preroll);
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asf_packetsize=fileh->max_packet_size;
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asf_packet=malloc(asf_packetsize); // !!!
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asf_packetrate=fileh->max_bitrate/8.0/(double)asf_packetsize;
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asf_movielength=fileh->send_duration/10000000LL;
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}
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// find content header
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pos = find_asf_guid(hdr, asf_content_desc_guid, 0, hdr_len);
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if (pos >= 0) {
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ASF_content_description_t *contenth = (ASF_content_description_t *)&hdr[pos];
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char *string=NULL;
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pos += sizeof(ASF_content_description_t);
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if (pos > hdr_len) goto len_err_out;
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le2me_ASF_content_description_t(contenth);
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mp_msg(MSGT_HEADER,MSGL_V,"\n");
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// extract the title
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if( contenth->title_size!=0 ) {
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string = &hdr[pos];
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pos += contenth->title_size;
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if (pos > hdr_len) goto len_err_out;
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if(verbose>0)
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print_asf_string(" Title: ", string, contenth->title_size);
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else
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pack_asf_string(string, contenth->title_size);
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demux_info_add(demuxer, "name", string);
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}
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// extract the author
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if( contenth->author_size!=0 ) {
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string = &hdr[pos];
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pos += contenth->author_size;
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if (pos > hdr_len) goto len_err_out;
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if(verbose>0)
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print_asf_string(" Author: ", string, contenth->author_size);
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else
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pack_asf_string(string, contenth->author_size);
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demux_info_add(demuxer, "author", string);
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}
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// extract the copyright
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if( contenth->copyright_size!=0 ) {
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string = &hdr[pos];
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pos += contenth->copyright_size;
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if (pos > hdr_len) goto len_err_out;
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if(verbose>0)
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print_asf_string(" Copyright: ", string, contenth->copyright_size);
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else
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pack_asf_string(string, contenth->copyright_size);
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demux_info_add(demuxer, "copyright", string);
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}
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// extract the comment
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if( contenth->comment_size!=0 ) {
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string = &hdr[pos];
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pos += contenth->comment_size;
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if (pos > hdr_len) goto len_err_out;
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if(verbose>0)
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print_asf_string(" Comment: ", string, contenth->comment_size);
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else
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pack_asf_string(string, contenth->comment_size);
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demux_info_add(demuxer, "comments", string);
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}
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// extract the rating
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if( contenth->rating_size!=0 ) {
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string = &hdr[pos];
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pos += contenth->rating_size;
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if (pos > hdr_len) goto len_err_out;
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if(verbose>0)
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print_asf_string(" Rating: ", string, contenth->rating_size);
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}
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mp_msg(MSGT_HEADER,MSGL_V,"\n");
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}
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// find content header
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pos = find_asf_guid(hdr, asf_stream_group_guid, 0, hdr_len);
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if (pos >= 0) {
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uint16_t stream_id, i;
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uint32_t max_bitrate;
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char *ptr = &hdr[pos];
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mp_msg(MSGT_HEADER,MSGL_V,"============ ASF Stream group == START ===\n");
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stream_count = le2me_16(*(uint16_t*)ptr);
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ptr += sizeof(uint16_t);
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if (ptr > &hdr[hdr_len]) goto len_err_out;
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if(stream_count > 0)
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streams = (uint32_t*)malloc(2*stream_count*sizeof(uint32_t));
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mp_msg(MSGT_HEADER,MSGL_V," stream count=[0x%x][%u]\n", stream_count, stream_count );
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for( i=0 ; i<stream_count ; i++ ) {
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stream_id = le2me_16(*(uint16_t*)ptr);
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ptr += sizeof(uint16_t);
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if (ptr > &hdr[hdr_len]) goto len_err_out;
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memcpy(&max_bitrate, ptr, sizeof(uint32_t));// workaround unaligment bug on sparc
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max_bitrate = le2me_32(max_bitrate);
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ptr += sizeof(uint32_t);
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if (ptr > &hdr[hdr_len]) goto len_err_out;
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mp_msg(MSGT_HEADER,MSGL_V," stream id=[0x%x][%u]\n", stream_id, stream_id );
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mp_msg(MSGT_HEADER,MSGL_V," max bitrate=[0x%x][%u]\n", max_bitrate, max_bitrate );
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streams[2*i] = stream_id;
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streams[2*i+1] = max_bitrate;
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}
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mp_msg(MSGT_HEADER,MSGL_V,"============ ASF Stream group == END ===\n");
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}
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free(hdr);
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hdr = NULL;
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start = stream_tell(demuxer->stream); // start of first data chunk
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stream_read(demuxer->stream, guid_buffer, 16);
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if (memcmp(guid_buffer, asf_data_chunk_guid, 16) != 0) {
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mp_msg(MSGT_HEADER, MSGL_FATAL, "No data chunk following header!\n");
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return 0;
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}
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// read length of chunk
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stream_read(demuxer->stream, (char *)&data_len, sizeof(data_len));
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le2me_64(data_len);
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demuxer->movi_start = stream_tell(demuxer->stream) + 26;
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demuxer->movi_end = start + data_len;
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mp_msg(MSGT_HEADER, MSGL_V, "Found movie at 0x%X - 0x%X\n",
|
|
(int)demuxer->movi_start, (int)demuxer->movi_end);
|
|
|
|
if(streams) {
|
|
// stream selection is done in the network code, it shouldn't be done here
|
|
// as the servers often do not care about what we requested.
|
|
#if 0
|
|
uint32_t vr = 0, ar = 0,i;
|
|
#ifdef MPLAYER_NETWORK
|
|
if( demuxer->stream->streaming_ctrl!=NULL ) {
|
|
if( demuxer->stream->streaming_ctrl->bandwidth!=0 && demuxer->stream->streaming_ctrl->data!=NULL ) {
|
|
best_audio = ((asf_http_streaming_ctrl_t*)demuxer->stream->streaming_ctrl->data)->audio_id;
|
|
best_video = ((asf_http_streaming_ctrl_t*)demuxer->stream->streaming_ctrl->data)->video_id;
|
|
}
|
|
} else
|
|
#endif
|
|
for(i = 0; i < stream_count; i++) {
|
|
uint32_t id = streams[2*i];
|
|
uint32_t rate = streams[2*i+1];
|
|
if(demuxer->v_streams[id] && rate > vr) {
|
|
vr = rate;
|
|
best_video = id;
|
|
} else if(demuxer->a_streams[id] && rate > ar) {
|
|
ar = rate;
|
|
best_audio = id;
|
|
}
|
|
}
|
|
#endif
|
|
free(streams);
|
|
streams = NULL;
|
|
}
|
|
|
|
mp_msg(MSGT_HEADER,MSGL_V,"ASF: %d audio and %d video streams found\n",audio_streams,video_streams);
|
|
if(!audio_streams) demuxer->audio->id=-2; // nosound
|
|
else if(best_audio > 0 && demuxer->audio->id == -1) demuxer->audio->id=best_audio;
|
|
if(!video_streams){
|
|
if(!audio_streams){
|
|
mp_msg(MSGT_HEADER,MSGL_ERR,"ASF: no audio or video headers found - broken file?\n");
|
|
return 0;
|
|
}
|
|
demuxer->video->id=-2; // audio-only
|
|
} else if (best_video > 0 && demuxer->video->id == -1) demuxer->video->id = best_video;
|
|
|
|
#if 0
|
|
if(verbose){
|
|
printf("ASF duration: %d\n",(int)fileh.duration);
|
|
printf("ASF start pts: %d\n",(int)fileh.start_timestamp);
|
|
printf("ASF end pts: %d\n",(int)fileh.end_timestamp);
|
|
}
|
|
#endif
|
|
|
|
return 1;
|
|
|
|
len_err_out:
|
|
mp_msg(MSGT_HEADER, MSGL_FATAL, "Invalid length in ASF header!\n");
|
|
err_out:
|
|
if (hdr) free(hdr);
|
|
if (streams) free(streams);
|
|
return 0;
|
|
}
|